<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hello, World!</title>
    <style>
        .tbcell {
            border: solid 1px red;
        }

        #mytbcell {
            border: solid 1px blue;
            width: 100%;
        }

    </style>
</head>
<body>
    <a href="https://cn.bing.com">bing</a><br><br>
    <table id="mytbcell">
        <thead>
            <tr>
                <td class="tbcell">name</td>
                <td style="border: solid 1px black;">gender</td>
                <td style="border: solid 1px black;">age</td>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td style="border: solid 1px black;">Tom</td>
                <td style="border: solid 1px black;">male</td>
                <td style="border: solid 1px black;">10</td>
            </tr>
            <tr>
                <td id="mytbcell">Jerry</td>
                <td id="mytbcell">male</td>
                <td id="mytbcell">12</td>
            </tr>
        </tbody>
    </table>


    <h1 style="color: red; font-size: 14px;">Header 1</h1>
    <h2 style="color: blue;">Header 2</h2>
    <h3>Header 3</h3>
    <h1>Header 1 - 2</h1>
    <h4>Header 4</h4>
    <h5>Header 5</h5>
    <h6>Header 6</h6>

    <p style="color: red;">this is p1 Using 'application/json', given [application/json, text/javascript, */*;q=0.01] and supportedUsing 'application/json', given [application/json, text/javascript, */*;q=0.01] and supportedUsing 'application/json', given [application/json, text/javascript, */*;q=0.01] and supported</p>
    <p>this is p2</p>

    
        <ul>
            <li>Hello, world</li>
            <li>Hello, world</li>
            <li>Hello, world</li>
            <li>Hello, world</li>
        </ul>
        
        <ol>
            <li>Hello, world</li>
            <li>Hello, world</li>
            <li>Hello, world</li>
            <li>Hello, world</li>
        </ol>

        <div style="color: red;">Hello world div
        <div>demo</div>
        <div style="color: blue;">are you okS
            <div>are you sure?</div>
        </div>
        </div>


</html>